Make a diagram: In the image below, try to draw a scenario in which the wave fronts become more closely spaced as the light beam enters Medium 2 and slows down, but the light beam and wave fronts do NOT change direction. (Remember, the wave fronts must remain connected as they cross the boundary.) NO LINKS

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.

Another word for electromagnetic energy is a. heat b. force c. matter d. radiation

Ne way in which elements differ from each other is the structure of the electron cloud in each element's atoms. in an electron cloud, an electron that is farther away from the nucleus has